I don't know why all this happened, except that I shouldn't have left my car at the train station over the week end:
viewtopic.php?f=6&t=14453I think that the first head gasket was due to old age, the metal between the other cylinders was cracked as well.
viewtopic.php?f=1&t=7195The second, the head gasket had already been changed: I think it was poorly mounted, or the head bolts not well tightened...
As they say in French: "jamais deux sans trois..."
That makes three problems, I hope bad luck will leave me alone for a while.. (lekopogom)